# imf.macro.gdp_growth

Get real GDP growth rate (annual percent change) from the IMF World Economic Outlook (WEO) for one or more countries, including IMF forward projections. Filter by ISO 3166-1 alpha-3 country code(s) and/or a year range; omit filters to get all 190+ countries plus regional/income-group aggregates. Data: IMF DataMapper (www.imf.org), CC BY 4.0, no auth required.

Agent View of the PolicyLayer registry record for `imf.macro.gdp_growth`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/imf.macro.gdp-growth

## Facts

- Tool: `imf.macro.gdp_growth`
- Server: Apibase (`apibase-mcp-client`) — https://policylayer.com/tools/io-github-whiteknightonhorse-apibase.md
- Install: `npx -y apibase-mcp-client`
- Homepage: https://github.com/whiteknightonhorse/APIbase
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 4
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `country` | string | no | ISO 3166-1 alpha-3 country code to filter (e.g. "USA", "DEU", "JPN", "CHN"). Omit to return all 190+ countries plus IMF regional/income-group aggregates. |
| `end_year` | integer | no | Latest year to include, including IMF WEO forward projections (e.g. 2029). Omit for full history. |
| `countries` | array | no | List of ISO 3166-1 alpha-3 country codes to filter (e.g. ["USA","DEU","JPN"]), max 20. Use instead of "country" to fetch multiple countries in one call. |
| `start_year` | integer | no | Earliest year to include in the returned time series (e.g. 2015). Omit for full history. |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "imf.macro.gdp_growth",
    "arguments": {}
  }
}
```

## Why imf.macro.gdp_growth is rated Low

Retrieves IMF macroeconomic data without modifying, executing, or creating any resources.

From the tool's own definition: "Get real GDP growth rate, filter by country code and year range"

## Use case

AI agents call imf.macro.gdp_growth to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Apibase:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "imf.macro.gdp_growth": {}
  }
}
```

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## For agents

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---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-whiteknightonhorse-apibase · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-whiteknightonhorse-apibase